Maintenance and Service Guide

Before removing the power button board, follow these steps:
1. Turn off the computer. If you are unsure whether the computer is off or in Hibernation, turn the
computer on, and then shut it down through the operating system.
2. Disconnect the power from the computer by unplugging the power cord from the computer.
3. Disconnect all external devices from the computer.
4. Remove the bottom cover (see
Bottom cover on page 23).
5. Remove the rear cover (see
Rear cover on page 26).
6. Disconnect the battery cable (see
Hard drive on page 27).
7. Remove the hard drive (see
Hard drive on page 27).
8. Remove the cover bracket (see
X-axis capacitor board on page 33).
9. Remove the display stand recess (see
Display stand recess on page 41).
Remove the power button board:
1. Release the ZIF connector (1) to which the power button board ribbon cable is attached, and
then disconnect the power button board ribbon cable from the system board.
2. Detach the power button board ribbon cable (2) from the battery. (The power button board
ribbon cable is attached to the battery with double-sided adhesive.)
3. Remove the two Phillips PM2.0×2.5 broad head screws (3) that secure the power button board
to the display assembly.
4. Remove the power button board (4) and cable.
Reverse this procedure to install the power button board.
Component replacement procedures 43